The universal algorithm for solving the gas dynamics equations on the mesh with arbitrary number of cell faces

The article presents the results of the development of methodology for the calculation of non-stationary gas dynamics processes occurring in gas dynamic paths of rocket engines and environment at the launch of rockets. The method takes into account the change of geometry of solid fuel combustion surface during the operation of the engine and the change in the geometry of the computational domain taking into account the dynamics of rocket launch. Numerical simulation of gas-dynamic processes of the launch of model solid-fuel rocket was done. The unsteady gas-dynamic flow pattern was investigated. The pressure curve in the solid propellant rocket engine combustion chamber, the speed of movement and overload were determined.

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Method of gas flows calculation in solid propellant rocket engines taking into account the combustion of solid fuel charge

Kostyushin

Eremin

Kagenov

et al. 2019

IOP Conf. Ser.: Mater. Sci. Eng.

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The paper presents a method for calculating the local and integral characteristics of the flow in the axisymmetric gas-dynamic paths of solid propellant rocket motors, taking into account the combustion of a charge of solid fuel. The numerical method of calculation is based on the use of the Godunov scheme, formulated for moving computational grids. The speed of movement of the combustion surface is defined locally on the edge of each calculation boundary cell. This approach allows us to take into account the uneven distribution of the pressure of the combustion products in the free volume of the combustion chamber. In test calculations, the power law of burning rate is used. Calculations of the gas flow in the solid propellant combustion chamber with cylindrical charge of solid fuel are carried out. Unsteady pressure curve in the combustion chamber is obtained. The method allows to determine all integral characteristics of the developed solid propellant rocket motors as a function of the engine running time.

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The universal algorithm for solving the gas dynamics equations on the mesh with arbitrary number of cell faces

Cited by 3 publications

References 9 publications

The influence of an oscillating wall on the position of oblique shocks in a 2D channel

The influence of an oscillating wall on the position of oblique shocks in a 2D channel

Simulation of non-stationary gas dynamics of solid propellant rockets launch

Method of gas flows calculation in solid propellant rocket engines taking into account the combustion of solid fuel charge

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